【说站】python静态方法如何定义

class 类:
@staticmethod
    def 静态方法():
        pass

import random
 
class Char:
    letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
    digits = '0123456789'
    @classmethod
    def random_letter(cls):
        return random.choice(cls.letters)
    @classmethod
    def random_digits(cls):
        return random.choice(cls.digits)
    
    @staticmethod
    def random_char(string):
        if not isinstance(string, str):
         raise TypeError('需要字符串参数')
        
        return random.choice(string)